DS1050U-001+

Overview

The DS1050U-001+ is a single-channel, 5-bit programmable pulse-width modulator (PWM) manufactured by Analog Devices/Maxim Integrated. It operates on a 2.7V to 5.5V supply and features a standard 1kHz output frequency. The device utilizes a 2-wire addressable serial interface for control, allowing duty cycle adjustment from 0% to 100% with 3.125% resolution steps. Packaged in an 8-pin µSOP, it draws a typical active current of 50µA and supports a low-current shutdown mode.

Feature Summary

• Single 5-bit PWM with adjustable duty cycle from 0% to 100%
• Standard 1kHz output frequency
• 2-Wire addressable serial interface compatible with I2C protocols
• Low power consumption: 50µA active, 1µA standby

Applications

• LCD contrast and brightness control
• Power supply voltage adjustment
• Battery charging or current adjustment

Procurement Notes

Verify the package type matches the 'u' suffix (8-pin 118-mil µSOP). Confirm the frequency suffix '001' corresponds to the 1kHz specification. Check RoHS compliance status as indicated in official documentation. Ensure the source document is the manufacturer datasheet rather than a distributor listing.

Selection Notes

Select this component when a fixed 1kHz PWM signal is required. Choose the U variant for space-constrained designs requiring the smaller µSOP package instead of the standard SOIC. Verify that the system bus voltage levels are compatible with the 2.7V to 5.5V operating range.

Part Context

This part belongs to the DS1050 family of programmable PWMs. The 'U' designation indicates the 8-pin µSOP package, while '001' specifies the 1kHz frequency option. Other variants include different frequencies (005, 010, 025) and the larger SOIC package (Z suffix).

Replacement Considerations

Direct pin-compatible replacements within the same family include DS1050U-005+, DS1050U-010+, and DS1050U-025+ for different frequency requirements. Cross-package equivalents like DS1050Z-001+ offer the same electrical function in a standard SOIC-8 footprint.